Shoe



Sept. 2, 1930. A. F4 CARLSON SHOE Filed Dec. '7, 1928 lnvenTor.

Axel F Carlson bya'fwSM/xkw Patented Sept. 2,` 1930 UNITED. STATES PATEN AXELI. CARLSON, OF CAMBRIDGE, MASSACHUSETTS, ASSIGNOR TO REECE SHOE MA- T OFFICE l CHINERY COMPANY, OIF BOSTON, MASSACHUSETTS, Af' CORPORATION OF MAINE SHOE IApplication filed December This invention relates to boots and shoes of thatl type in which the outer sole isfcemented to the inner sole as` distinguished from boots and shoes in which the outer sole is secured to the inner sole by stitches, nails or other fasteiliing devices that extend through the outer so e.

In a cemented shoe the cement or other adhesive, which constitutes the means for attaching the outer sole to the inner sole, is lo-v cated entirely between the contact-ing faces off the outer sole and the inner sole.

One disadvantage inherent in a shoe of this type becomes apparent if any plane of weakness exists in the structure of the outer sole. It not infrequently'happens that while an outersole will apparently be of iirst-class quality in every way yet it may have in its structure a plane ofweakness extending substantially parallel to the faces of the sole. Sometimes in the operation of beating out the sole or of levelling the sole the leather or other material of the outer sole tends to become stratified and under such circumstances there is apt to develop planes of weakness in the material of the outsole.

' The existence of such planes of weakness is of small consequence in the case of a shoe in whichlstitches, nails or other similar fastenings are used for securing the outer vsole in j place because such fastenings pass through the outer sole and thus tietogether the diierent strata. In the case of a shoe, however, in

w ich the outer sole is secured to the inner sole solely by a layer ofcem'ent or other adhesive the existence of such plane of weakness in the outsole would .render the shoe defective because if the planevofweakness extends to the outer edge of the solethere is a liability invention `I have illustrated in the drawings a selected embodiment thereof which willnow 7, 1928. Serial No. 324,451.

be described after- Which the novel features will be pointed out in the appended claim.

Fig. l is a transverse sectional View through a shoe embodying my invention;

Fig. 2 is a perspective view of the outsole made in accordance with my invention, said viw showing the attaching face of the outso e;

Fig. 3 is a sectional perspective view showinga different embodiment of the invention.

' In the drawings 1 indicates a shoe which is provided with the usual upper 2, insole 3 and outsole 4. In the shoe illustrated the upper, -insole and outsole are attached together by cement or other adhesive instead of stitching or other similar fastening devices.

The edges 5 of the upper which overlie the insole 3 are cemented to the under side of the insole while .the outsole 4 is cemented to the bottom of the shoe by a suitable cement or adhesive 6. 7 indicates the usual filling which is inserted between the insole and the outsole..

In a shoe having this construction .the means by which the outer sole is secured to the insole, that is, the cement 6, is located entirely between the outer sole and the insole and does not penetrate into the body of the outsole. It sometimes happens that an outer sole will develop a plane of weakness extending substantially parallel to the faces thereof and which is indicated in Fig.y1 by the line 8. l Such planes of weakness might be a Weakness inherent in the leather vor it may be a weakness which will be developed during the levelling of the sole or during other operations on the sole which involve the use of heavy pressure. times tend to stratify the outer sole somewhat with t-he result that planes of Weakness might be developed betweenthe stratifications. If such plane of weakness extends to the edge of the sole then there is danger that the sole may' split or `open up at this plane of weakness. l

My present invention has for its object to provide `a novel means for preventing this possibility and for strengthening the outsole. I accomplish this by providingin the outsole one or more veins of cement or other bind-i Such operations some;A

ing material which extend from the attaching face into the body of the sole and towardy face of the outsole, said groove extending in,

the direction and having the shape desired. In Fig. 2 I have shown the groove 9 as extending around the margin of the outsole a short distance from the peripheral edge 10. rlhis groove is filled with some suitable cement or. adhesive, which may be of the same character as the cement 6 which is used for securing the outer sole 'to the insole or may be of any other desired character. This groove 9 may be filled with cement at #ghe time the cement 6 is applied to the attaching face of the outsole or may loe filled with cement previous to this operation. In either case when the outer sole has been attached to the shoe by the cement 6 said sole Will have incorpo` of the sole on either side of the plane of Weaky ness. rlfhis will prevent the sole from opening up or splitting at this Weak point and will strengthen the sole in somewhat the same manner as is done by stitches or fastenings which extend through the outsole.

Instead of making the strengthening vein as shown in Figs. l and 2 I may make it in the form shown in Fig. 3. In this construction the outer sole is slit or channeled as shown at 12 and then the slit is opened up slightly andpilled with the cement or binder. When this cement dries or sets the outer sole Will have incorporated therein a vein of cement extending from the attaching face partially at least to the Wear face and this vein will serve to prevent the sole from separating along any planes of Weakness which may exist therein.

The advantage of placing the vein or veins adjacent the marginal edge of the outsole is that theveins in thisvposition serve toy strengthen the edge. yThe invention -conte1n.

plates, however, placing these strengthening veins in any portion of the sole and employing any number of them. The sole shown in Fig. 3, for instance, has not only the vein 12 Miraglia A shoe comprising an upper, an insole, and an outsole which is attached to the insole by cement, said outer sole having incorporated therein a vein` of cement which extends from the attaching face nearly to the wear face and which has hardened or solidified from liquid state in the outer sole.

In testimony whereof, I have signed my name to this specificatie f AXEL F. CARLSON.

around the marginal portion of the shoe but another vein 13 located cent-rally of the sole.

The vein 13 is shown as sinuous in shape butV the invention contemplates the use of a vein of any shape.

I claim 

